Pump.



H- K. HEDGES.

PUMP.

. APPLICATION FILED MAY 2. I9'I4.

Patented Apr. 16, 1918.

WITES SEIS IS ATTRNEY 'HA-REY K. HEDGES, 0F LOS AN'GrIElLIES7CALIFORNIA.

PUMP.

Specicaton of Letters' Patent.

Patented Apr-.16,1918.

Application filed May 2, 1914. Serial No. 835,919.

To all whom tf/nay concern:

Be it known that I, 'HARRY K. IHEDGES, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented new and useful Improvements in Pumps, of whichthe following is a specification.

This invention relates to pumps, and more particularly to that class ofpumps designated as displacement pumps, in whichcompressed air isutilized 'for raising liquids, by the application of the compressed airdirectly `on the surface of successive charges of the liquid, suchcharges being thereby driven out of suitable displacement chambers.

The invention has for its object to provide a pump of the lgeneralcharacter stated, which. will be relatively simple and inexpensive inconstruction, positive, highly eiiicientand economical in operation, andwhereby those losses which accompany, in present practice, theutilization of 'compressed air or other suitable elastic medium in thedirect applicationthereof to the liquid to be raised, are eliminated.This object is attained by such provision, combination or interrelationof elements and features, that the elastic medium employed'for raisingthe liquid, or a portion of such medium, is employed to control theoperation of the pump by operating` a suitable controlling member ormembers for controlling the admission and exhaust ofthe elastic mediumto the displacement chambers, the controlling member or members beingpositioned adjacent thereto, such member or members in turn beingsubject to the control of a distributing timer which may be placed eX-terorly of the well, mine, shaft, or the like in which such pump isinstalled. The controlling member or memberslbeingplaced at or near thepoint of work and being controlled through the elastic medium itself,the pump is especially well adapted for use in deep wells where thegreat distance between the displacement chambers and the means ofcontrolling the operation thereof .would necessitate, in lpumpsorganized in accordance with standard practice, the use of long andheavy connecting means, or would result, in cases where the mediumitself is controlled at such distances 'from the point of work, Withoutthe intermediation of the controlling member or members, in

great loss of energy due to the wasting ofthe drawing and finallypointed out in claims.

In the drawing:

Figure 1 v'is a fragmentary vertical transverse sectional View of aportion of a deep well, such as a deep oil well, showing the improvedpump installed therein;

Fig. 2 is a view similar to Fig. l, showing the reverse side of thepump, the Vdisplacement chambers being shown in section;

Fig. 3 is a vertical transverse vsectional view of one of' thecontrolling members, taken on the line m3-3, Fig. l, *and looking in thedirection of the appended arrows;

Fig. 4 is a view similar to Fig. 3, being a vertical transversesectional view of the other controlling member, taken on the line m4-4,Fig. Vl, and looking in the direction of the appendedarrows;

Fig. 5 is a horizontal transverse sectional view takenvon the line @-005Fig. 2, and

looking in the direction of the appended arrows; Y

Fig. 5 is a view similar to Fig. 5 taken o-n the 'line :v6-006, Fig. 2,and looking in the direction of the appended arrows; and

Fig. 7 is a view similar to Figs. 5 and 6, taken on the line 027-007,Fig. 2, and looking in the direction of the appended arrows.

vCorresponding parts in all the ligures are designated by the samereference characters.

Referring with particularity to the drawing, A designates Igenerally thehole of a deep well within whichy liquid to be pumped is shown as at a.`The improved pump is shownas comprising in the main a plurality ofdisplacement chambers B and C and controlling members D and E for therespective chambers B and C. These controlling members being subject tocontrolby a master controller or distributing timer F shown at, theorifice of the well, snchc0ntrol by the master controller F over thecontrolling members B andl E being had through the medium lof theelastic working fluid. The displacement chambers B and' C are preferablyformed in a cylindrical shell 8, the chamber B being provided with adischarge duct 9 and an inlet check valve 10, a discharge check valve 11being provided in an enlargement 9'DL at the upper end of the duct 9,such valve co-acting with a suitable seat 12 in the end wall 9b of theduct 9. A seat 13 for the inlet valve 10 is formed in the bottom wall 14of the chamber B. The chamber C is likewise provided with an inletcheckvalve l5, a discharge check valve 16, located in an enlargement17at provided in a discharge duct 17, the discharge check valve 16 beingprovided with a seat 18 in the end wall 17h of the duct 17, a seat forthc inlet valve 15 being provided in the bottom wall 19 of the chamberC.

In the embodiment of the invention shown in the drawing, theconstruction of the displacement chambers, which will be readilyunderstood by reference to Figs. 1, 2, 3 and il, is particularly welladapted for use in deep wells of small diameter, compartments beingformed, one on each side of a vertiV cal transverse central partition 2Odividing the cylindrical shell 8 into the chambers B and C, thedischarge ducts 9 and 17 being formed by semi-circular walls 21 and 22respectively, such walls 21 andf22 being made integral with thepartition 20, one'on each side thereof, and each extending to within ashort distance of the bottom of its respective chamber B or VC, thepartition 20'extending the full length of the chambers B and C merginginto the top wall 8a and the bottom wall 8b thereof. A discharge valvechamber 23 is provided at the top of the cylindrical shell 8, to providespace for the play of the valves, a discharge pipe 24 for the liquidbeing threaded as at 24a into the top wall 25 of the valve chamber 23. YY

The controlling members D and E each comprise a cylinder 26 and a pistonvalve 27 mounted therein and adapted to be reciprocated through themedium of the working fluid, the interval between reciprocations of thepistons 27 being determined by the speed at which the timer F is driven,as will hereinafter be described. The cylinders 26 each are providedwith an inlet port 28 and a discharge port 29, other ports 30 and 31being provided vin the cylinder walls at a point substantiallydiametrically opposed to the ports 28 and 29 respectively, these latterports communicating through short pipes 32 and 33 with the displacementchambers, the pipe 32 leading from the ports 30 and 31 of thecontrolling member D to the upper portion b of the displacement chamberB, and the pipe 33 leading from the ports 30 and 31 of the controllingmember E to the upper portion c of the displacement chamber C. Thepiston valves 27 are cut away or provided 4with circumferential reducedportions forming passages 27a and 27". 1When the piston valves are atone end of their stroke the passages 27 a are in registration with andestablish communication between inlet ports 28 and the ports 30 andworking fluid is allowed to pass through that controller member which isso set, to

ing fluid to the chambers therethrough, but t permitting the escape orexhaust of the previously admitted portion of such fluid from thedisplacement chambers, when it has performed its function in driving outthe charge of liquid to be raised, such escape or exhaust being throughthe ports 31, the passage 27 b and the exhaust ports 29 and to andthrough the exhaust pipe 34C which is bifurcated at its lower end, thefurcation 34a connecting with the exhaust port 29 of the cyl'- inder 26of the member D andthe furcation 34h to the other exhaust port 29provided in the cylinder 26 of the member E. It will be understood that,though the controlling members D and E are described as operating inexactly the same manner, they do not operate to admit and exhaustworking fluid to the chambers simultaneously, but alternate in theiraction, for during such time as the piston valve of the member D isadmitting air to the displacement chamber B the piston of the member Eis positioned so that the passage 27V registers with the port 31 and theexhaust port 29 provided in the cylinder 26 of the memberl B permittingexhaust of the working fluid in the chamber C. The piston valves 27being subject tocontrol by the timer they are allowed to remain in thepositions just described for a predetermined time and then theirpositions are reversed, that is, the piston valve 27 of the member Dwill be moved into such position that the portion 27 C of that pistonvalve will terminate the admission of working fluid to the chamber B bycovert Vworking fluid to the displacement chamber Cto expel the liquidtherein, the port 31 and the exhaust portf 30 of the member E beingclosed by the portion 27 d of its piston valve. A supply pipe 35 for theworking fluid leads from the distributing timerF Vto the cylinder head26a of themember D where it connects with the interior of thev cylinderabove the portion 27 of the piston valve. branch pipe 35a springing fromthe pipe 35 leads into the inlet port 28 provided in the cylinder wallof the member E, an extension 35b of the branch pipe leading tothe lowercylinder head 26b of the member E and communicating with vthe interiorolI the cylinder below the portion 27d of the respective piston 27. Asimilar supply pipe 36 for the working fluid leads from the distributingtimer F to the cylinder head 26a of the member E and communicateswithvthe interior of the respective cylinder 26 above the portion 27c ofthe pistonvvalve 27. A branchpipe 36a springs from the; pipe 36 andleads into the inlet port 28 of the member D, an extension 36b of suchbranch pipe leading to the lowercylinder head 2Gb and communicating withthe interior of the cylinder 26 of the member D below the portion 27d ofthe respective piston valve 27.

The distributingtimer- F comprises a distributing cylinder 37 providedwith ports and :39, a supply pipe 40 for supplying the elastic medium orworking iluidfbeing tapped into the cylinder between the ports 38 and39, and a piston rod 41 provided at its ends withy pistons 42 and 43which are cut away as at 42a' and 43a respectively to 'formcircumferential grooves or channels.

The chamber' 44- formed by the pistons 42 and 43 and-the walls of thecylinder 37 is always in direct communication with the supply ofvelastic medium as; delivered by the pipe 40, connectionbeing madebetween the chamber 44 and the channel 42a by a. duct 42b a similar duct43b being provided in the piston 48 through which the channel 43acommunicates with the supply of. elastic medium in the chamber 44. Thepiston is provided with a connecting rod 45 through which it isreciprocatedby any` suitable device as for instance the eccentric shownat 46. The supply pipe S35-leading to the controllers is connected tothe distributing cylinder 37 at thc port 38 thereof, the'supply pipe 36being connected atY the port 39 of the distributing cylinder 37.

The operation, method of use and ad- .vantages of the pump hereindescribed and shown in the drawing will be readily understood,particularly in and by the following statement A supply ci compressedair or other elastic medium from any suitable source is connected withthe chamber 44 of the distributer by the pipe 40, and by reciprocationof the pistons 42 and 43, alternately admitted to the supply pipes 35and 36, the arrangement of the pistons being such that when the pipe 35is being-supplied with air through the duet 42h, the channel 42 and theport 3S, the pipe 36 is free to is to be raised discharging its liquid,a charge 'of liquid' 41s entering the otherchamber;'through rtsiin-lalternate admission and exhaust of compressed air to the pipes 35 and 36actuates the piston valves causingl reversal of their positions witheach admission and exhaust into the supply pipes 35 and 36. Whencompressed airis admitted t0 one ofn the pipes and therethrough to oneof' the cylinders 26, at the top portion thereof, the piston in thatcylinder is driven down andthe piston valve 27 `thereinisin position topermit exhaust volf the previously admitted charge of compressed air inthe respective displacement chamber whichi lit controls,

-w-hile at the same time one of the timer pistons uncovers a'port 38'or. 39 an'di'the other supply 'pipe is in `position to --exha-'ust`through its respective port in the distribut- 1595 the portion 27 C`ofthe piston 27in the'other ingv cylinder, and' the pressure on top4 ocylinder 26 isreleased, airfrom the branch pipe extension leading to thelowerv cylinder head 26b forces the piston valve'up or'in position to'admitcompressed-air toitsreJ spe'ctive displacement chamber through thebranchl pipe `supplying lit', to"inlet^port-28,

` passage 27, port'SOand 'the shortzpipe connectin g l'the port 30 with;its respective displacement chamber." When one-ofthe pis-- ton valvesvvis in position to admitcompressed air to'itsdisplacement chamber, "thecompressed air so admittedlforcesthe charge of liquidin that*`chamber-out' through its respective discharge'check valve, and: into orthrough the discharge pipe' 24, which leads to 'the' `desired level'toivhich the liquid dhile lone chamberis thus take valve and drivingout the air therein, its controlling' member pistonvalve -being inposition to permit exhaust.

The alternate reciprocation of the piston valves of the controllingmembers in opposite directions of travel to opposite positions due tothe lifting by the compressed air of one of the pistons, while air fromthe same pipe depresses the other piston per- Jfectly controlling theadmission and exhaust of the compressed air into the displacementchambers as regulated by the distributing timer F, so that by the samestroke the distributing timer F permits admission of elastic medium toone displacement chamber and consequently causes eX- pulsion of theliquid therein, it permits the escape through the exhaust pipe 34 ofsuch elasticvmedium Las has just linished its work of expulsion in theother displacement chamber, and the displacement chambers beingsubmerged, liquid automatically enters and fills the chamber1 which willbe ready for discharge when the distributing timer F again acts toreverse the position of the piston valves 26 which reversal will takeplace when the charge of liquid, in the chamber discharging, has beenexpelled. The interval between reversals or alternate discharges may beaccurately adjusted by simply driving the timer at the proper speed tomeet the requirements of any particular installation. When the timer isso adjusted the liquid will issue from the discharge end of the pump ina smooth even stream free from pulsations.

Having thus described my invention, I claim and desire to secure byLetters Patent:

l. A pump of the character disclosed, comprising a plurality ofdisplacement chambers adapted for submersion and provided each with aliquid intake valve and a liquid discharge valve, and means forsupplying an elastic'medium under pressure to said chambers, said meanscomprising a supply pipe for each of said chambers, a distributing timerhaving ports therein controlling the admission and exhaust of theelastic medium to and from said supply pipes, ka controlling lcylinderfor each of said chambers, and a controlling valve in each of saidcontrolling cylinders, there being ports in said cylinders through whichsaid elastic medium is passed, subject to control by said controllingvalves, said controlling valves being actuated by said elastic medium inits travel en masse to and from said displacement chambers, whereby theactuation of said controlling pistons is governed by said distributingtimer.

2. A pump of thecharacter disclosed, comprising a plurality ofdisplacement chambers adapted for submersion and -provided each with aliquid intake valve and a liquid discharge valve and means for supplyingan elastic medium under pressure to said chambers, said means comprisinga Supply pipe for each of said chambers, a distributing timercontrolling admission of elastic medium to said pipes, and independentcontrolling cylinders, one for each of said displacement chambers; saidcontrolling cylinders being located adjacent said displacement chambersand each provided with elastic medium admission ports and elastic mediumdischarge ports, and each having a piston therein to control said ports;one,

of said supply pipes being connected with each of said cylinders tocause the actuation of the respective piston valve and being connectedwith another oi said cylinders at the elastic medium inlet port thereofand connected with such cylinder near one end to admit elastic medium toactuate the piston therein whereby alternate admission of elasticworking fluid by said distributing timer to said supply pipes, causesthe reciprocation of the piston valves as the working fluid is cut 0E orsupplied to the displacement chambers. 'Y

3. In apparatus of the character disclosed, a tubular body provided atone end with a plurality of inlet valves and at the other end with aplurality of discharge valves,

and having a vertical partition ranging f HARRY K. HEDGES.

Witnesses:

ALFRED H. DAEHLER, TYoIE FULLEN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, JD. C.

